Milwaukee eats?

My husband I will head to Milwaukee in May for a family gathering, but we have all day Friday to ourselves. We need suggestions for lunch/dinner/snacks downtown or within a near driving distance. Even though we went to school in Madison I don't think we are going to make it down there for the day. We can find good beer (beer geek husband), but suggestions for great burgers, pizza, sandwiches, or anything special to the area are welcome!